WebSocket Chat Server

This is just a toy chat server I wrote to get more comfortable/reacquainted with WebSockets!

Dependencies

The only dependency is the EM-WebSocket library. To install it, just run:

gem install em-websocket

Running the Server

To run the server:

ruby em-ws.rb

Message Format

The format for a message, both to and from the client, is:

{
    type: string;
    username: string;
    value?: any;
}

All messages require a type and username, but only some messages will provide or require a value.

To see the types of messages the client can send, please see Accepted Message Types. For the types of messages the server will send, please see Response Types.

Accepted Messages Types

Type	Purpose
login	Let's a user register their username, must be unique
logout	Unregister the username
chat	Send a chat message

All other types will result in a error message being returned.

Responses Types

Type	Purpose
login_failure	Username from a login is taken
logged_in	Username successfully registered
chat	A chat message was sent
error	An unknown message type was sent

All users receive the chat messages, but only the sending user will receive the other three message types.